/Engine/Source/Editor/CurveEditor/Public/SCurveEditorView.h
Retrieve all the curve points, if any of the interpolating points overlap the specified rectangle in widget space
Whether any points were within the widget range
virtual bool GetCurveWithinWidgetRange ( const [FSlateRect](API\Runtime\SlateCore\Layout\FSlateRect) & WidgetRectangle, [TArray](API\Runtime\Core\Containers\TArray)< [FCurvePointHandle](API\Editor\CurveEditor\FCurvePointHandle) > * OutPoints ) const